
Some blacknecked cranes fly in a national park in Shaotong, southwest China's Yunnan Province, Feb. 25, 2009. About 1,400 blacknecked cranes spent their winter here from the end of 2008 to early 2009, which hit a historical record. (Xinhua/Lin Yiguang)

Some blacknecked cranes fly in a national park in Shaotong, southwest China's Yunnan Province, Feb. 24, 2009. About 1,400 blacknecked cranes spent their winter here from the end of 2008 to early 2009, which hit a historical record. (Xinhua/Lin Yiguang)

Some blacknecked cranes fly in a national park in Shaotong, southwest China's Yunnan Province, early Feb. 25, 2009. About 1,400 blacknecked cranes spent their winter here from the end of 2008 to early 2009, which hit a historical record. (Xinhua/Lin Yiguang)

Some blacknecked cranes fly in a national park in Shaotong, southwest China's Yunnan Province, early Feb. 25, 2009. About 1,400 blacknecked cranes spent their winter here from the end of 2008 to early 2009, which hit a historical record.(Xinhua/Lin Yiguang)

Some blacknecked cranes fly in a national park in Shaotong, southwest China's Yunnan Province, Feb. 25, 2009. About 1,400 blacknecked cranes spent their winter here from the end of 2008 to early 2009, which hit a historical record. (Xinhua/Lin Yiguang)

Some blacknecked cranes fly in a national park in Shaotong, southwest China's Yunnan Province, Feb. 25, 2009. About 1,400 blacknecked cranes spent their winter here from the end of 2008 to early 2009, which hit a historical record. (Xinhua/Lin Yiguang)